<div id="bilyn_app" class="bily_app_style">   
    <?php   
    if (isset($screenflow) && $screenflow != null) {
        $uiNode->gotoScreenFlow($screenflow, $data);
    } elseif (isset($screen) && $screen != null) {
        $uiNode->gotoScreen($screen, $data);
    }
    ?> 
</div>